Journal article

Publication year: 1996

Pages: 473-478

Journal: Journal of Inorganic and General Chemistry

Volume number: 622

Issue number: 3

ISSN: 0044-2313

DOI Link: https://doi.org/10.1002/zaac.19966220315

Publisher: Wiley

Abstract: 
The reactions of Te2Er with MoOBr3, TeCl4 with MoNCl2/MoOCl3, and Te with WBr5/WOBr3 yield black, needle-like crystals of [Te(15)X(4)][MOX(4)](2) (M = Mo, W; X = Cl, Br). The crystal structure determinations ([Te15Br4][MoOBr4](2): monoclinic, Z = 1, C2/m, a = 1595.9(4) pm, b = 403.6(1) pm, c = 1600.4(4) pm, beta = 112.02(2)degrees; [Te15Cl4][MoOCl4](2): C2/m, a = 1535.3(5) pm, b = 402.8(2) pm, c = 1569.6(5) pm, beta = 112.02(2)degrees; [Te15Br4][WOBr4](2): C2, a = 1592.4(4) pm, b = 397.5(1) pm, c = 1593.4(5) pm, beta = 111.76(2)degrees show that all three compounds are isotypic and consist of one-dimensional ([Te(15)X(4)](2+))(n) and ([MOX(4)](-))(n) strands. The structures of the cationic strands are closely related to the tellurium subhalides Te(2)X (X = Br, I). One of the two rows of halogen atoms that bridges the band of condensed Te-6 rings is stripped off, and additionally one Te position has only 75% occupancy which leads to the formula ([Te(15)X(4)](2+))(n) (X = Cl, Br) for the cation. The anionic substructures consist of tetrahalogeno-oxometalate ions [MOX(4)](-) that are linked by linear oxygen bridges to polymeric strands. The compounds are paramagnetic with one unpaired electron per metal atom indicating oxidation state M(V), and are weak semiconductors.

Harvard Citation style: Beck, J., Pell, M., Richter, J. and Ibers, J. (1996) Modified tellurium subhalides in the new structure type [Te(15)X(4)](n)[MOX(4)](2n) (M=Mo,W; X=Cl,Br), Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 622(3), pp. 473-478. https://doi.org/10.1002/zaac.19966220315

APA Citation style: Beck, J., Pell, M., Richter, J., & Ibers, J. (1996). Modified tellurium subhalides in the new structure type [Te(15)X(4)](n)[MOX(4)](2n) (M=Mo,W; X=Cl,Br). Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 622(3), 473-478. https://doi.org/10.1002/zaac.19966220315